Add Texture Shading to gdaldam

[arenol]

Feature description

Anyone bother to add texture shading to the gdaldem app?

command line argunments would be something like

gdaldem texture [-Z <Zfactor , default =1.0>] [-T <texture_amount: 0-200>] ... <inputdem> <outputfile>

See https://www.textureshading.com/ for reference.

Additional context

No response

[rouault]

Anyone bother to add texture shading to the gdaldem app?

Unlikely to happen by magic. Someone will have to code that.

[hobu]

Precompute all of your derivatives and use gdal_calc.py to create this. No reason to add this special feature to gdaldem IMO.

[wiesehahn]

Just came across this by accident and I have to say I like the style very much. ❤

It seems to be implemented already in e.g. QGIS Terrain shading plugin and rayshader.

Just to mention it, I would love to see additional terrain metrics (e.g. texture-shading, openness, curvature, ...) in the future with the new gdal cli. There is already things such as Terrain Ruggedness Index implemented and in my opinion it would be great to advance capabilities here.

Possibly also worth considering grouping everything mainly related to terrain/elevation in a sublevel of gdal raster, such as e.g.:

• gdal raster terrain aspect / gdal raster elevation aspect
• gdal raster terrain slope
• gdal raster terrain hillshade
• gdal raster terrain roughness
• gdal raster terrain position-index
• gdal raster terrain ruggedness-index